Observer seen 'climbing into OSCE car and driving away'

One of the eight European observers being detained by pro-Russian separatists in the eastern Ukraine city of Slaviansk was escorted to an Organisation for Security and Cooperation in Europe (OSCE) vehicle and driven away, according to Reuters.

Stella Khorosheva, a spokeswoman for the separatist mayor of Slaviansk, said the observer who left is a Swedish national. "He has a mild form of diabetes and so we decided to let him go," she told reporters.

According to the spokeswoman, he would be the only observer to be released on Sunday.